Registry permissions

Every key in the Registry has a set of permissions saved to it that affects which users can read or alter it. You can see this in the Registry Editor by going to Run | regedit, right-clicking on a key and selecting Permissions. WiX allows you to change these permissions with its PermissionEx element.

PermissionEx isn't in the default WiX namespace, but rather in the Util extension. So, you'll need to add a reference in your project to WixUtilExtension.dll, found in the WiX bin directory, and add the UtilExtension namespace to your Wix element. Here's an altered Wix element:

<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" 
xmlns:util="http://schemas.microsoft.com/wix/UtilExtension">

Here, we've assigned the Util namespace to the prefix util. Now, when we create a registry key with a RegistryKey element, we'll nest a PermissionEx element inside it to set its permissions. The next example sets the permissions of a key called MyKey so that a user named "nickramirez...